WO2019127171A1 - Dispositif et procédé permettant de corriger un écart entre de multiples réseaux de canaux de transmission - Google Patents

Dispositif et procédé permettant de corriger un écart entre de multiples réseaux de canaux de transmission Download PDF

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Publication number
WO2019127171A1
WO2019127171A1 PCT/CN2017/119185 CN2017119185W WO2019127171A1 WO 2019127171 A1 WO2019127171 A1 WO 2019127171A1 CN 2017119185 W CN2017119185 W CN 2017119185W WO 2019127171 A1 WO2019127171 A1 WO 2019127171A1
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WO
WIPO (PCT)
Prior art keywords
transmission channel
array
cascade
channel
deviation
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PCT/CN2017/119185
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English (en)
Chinese (zh)
Inventor
周沐
张立基
曹毅
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/119185 priority Critical patent/WO2019127171A1/fr
Priority to CN201780098048.2A priority patent/CN111527713B/zh
Publication of WO2019127171A1 publication Critical patent/WO2019127171A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements

Definitions

  • the present application relates to the field of communications technologies, and in particular, to an apparatus and method for correcting a transmission channel offset between multiple arrays.
  • Phased array is a phase-controlled electronic scanning array. It uses a large number of antenna elements arranged in an array. Each antenna unit has independent switch control. By controlling the amplitude and phase of each antenna unit in the array, the radiation direction of electromagnetic waves is modulated. To synthesize a beam with a focused focus scan.
  • the millimeter wave is used as the carrier of the signal. Since the attenuation of the millimeter wave in the atmosphere is greatly increased compared with the low frequency electromagnetic wave, the orientation of the signal in the 5G communication system can be enhanced by introducing a large phased array technology. Effective omnidirectional radiated power, increasing system communication distance and system capacity. Large phased array technology uses a large number of signal transmission channels integrated into one or more chips. High-performance phased arrays require a high degree of uniformity in the transmission channels, but during production and use, deviations occur between these transmission channels, and the deviation of each transmission channel needs to be calibrated.
  • Multiple transmission channels in a chip can form an array.
  • the number of transmission channels in an array is usually limited. By using multiple arrays, the number of transmission channels in the phased array can be increased to achieve larger signal transmission.
  • the transmission channels of the two arrays are usually placed in the measurement loop, and the reference signals are input to the reference transmission channels of the two arrays by external instruments, and the reference transmission channels are input.
  • the output signal and the reference signal are self-mixed in an external instrument, and the amplitude and phase corresponding to each transmission channel are output, and the transmission channel between the arrays is corrected based on the obtained amplitude and phase.
  • the measurement loop is used to correct the transmission channel between the arrays, it is susceptible to the surrounding electromagnetic environment, resulting in large correction errors and in-line correction of the transmission channels between the arrays.
  • Embodiments of the present application provide an apparatus and method for correcting a deviation of a transmission channel between a plurality of arrays, for reducing a correction error of a transmission channel, and implementing online correction of an transmission channel between the arrays.
  • an apparatus for correcting deviations of transmission channels between a plurality of arrays including a first array, a second array, and a third array, the first array being cascaded with the second array and the third array, respectively And the first array is a second array and a third array of upper arrays, the cascaded plurality of arrays comprising a first cascade transmission channel and a second cascade transmission channel, the first cascade transmission channel comprising the first array a first transmission channel and a reference transmission channel in the second array, the second cascade transmission channel includes a second transmission channel of the first array and a reference transmission channel in the third array, the device comprising: a power detection unit for detecting Signal power of the first cascade transmission channel and the second cascade transmission channel, the detected signal power includes one or more signal power sets, and each signal power set includes a first signal detected by the first cascade transmission channel Power, a second signal power detected for the second cascade transmission channel, and a third signal power detected for the first cascade
  • the first array is cascaded as the upper array with the second array and the third array, and the signal powers of the first cascade transmission channel and the second cascade transmission channel are detected, and then according to the detected signal power.
  • Determining the deviation correction value by setting the deviation correction value in the first transmission channel or the second transmission channel to correct the deviation between the first cascade transmission channel and the second cascade transmission channel, thereby improving the cascading transmission channel correction Accuracy, while achieving online correction of the transmission channel between the arrays.
  • the first cascading transmission channel and the second cascading transmission channel are both receiving channels, and the first transmission channel and the second transmission channel are combined by the first combiner, and power detection is performed.
  • the unit is coupled to the first combiner by a first coupler to receive a signal coupled from the first combiner.
  • the first combiner may be integrated in the power detecting unit, and the signals received by the first cascade transmission channel and the second cascade transmission channel may be transmitted by the far field.
  • the first cascade transmission channel and the second cascade transmission channel are both receiving channels, and the first coupling device and the first combiner enable the power detecting unit to detect the first cascade transmission channel. And the signal power of the second cascade transmission channel, while ensuring that the error of the detected signal power is small.
  • the multiple arrays further include a fourth array that is cascaded with the first array, and the first array is an upper array of the fourth array, and the cascaded plurality of arrays further includes a level a cascading transmission channel, the cascading transmission channel includes a third transmission channel in the first array and a reference transmission channel in the fourth array, and the first cascading transmission channel and the second cascading transmission channel receive the cascading transmission channel through the air interface loopback The transmitted signal.
  • the utilization rate of the transmission channel in the device can be improved to a certain extent, and the complexity of the device is simplified.
  • the reference transmission channel of the second array is any one of the plurality of transmission channels included in the second array, and the plurality of transmission channels are combined by the second combiner, a transmission channel is connected to the second combiner to cascade the first array and the second array;
  • the reference transmission channel of the third array is any one of the plurality of transmission channels included in the third array, and the plurality of transmissions The channels are merged by a third combiner that is coupled to the third combiner to cascade the first array and the third array.
  • the first cascading transmission channel and the second cascading transmission channel are both transmitting channels
  • the plurality of arrays further includes a fifth array cascading with the first array
  • the first The array is a fifth array of upper arrays
  • the cascaded plurality of arrays further includes a cascade receiving channel, the cascade receiving channels including a fourth transmission channel in the first array and a reference transmission channel in the fifth array, the cascade receiving channel And a signal for transmitting the first cascade transmission channel and the second cascade transmission channel by the air interface loopback
  • the power detection unit is connected to the fourth transmission channel in the first array by the second coupler to receive the fourth transmission The signal that the channel is coupled to.
  • the utilization rate of the cascaded transmission channel in the device can be improved to a certain extent, and the complexity of the device is simplified.
  • the reference transmission channel of the second array is any one of the plurality of transmission channels included in the second array, and the plurality of transmission channels are separated by the first splitter.
  • the first transmission channel is connected to the first splitter to cascade the first array and the second array;
  • the reference transmission channel of the third array is any one of the plurality of transmission channels included in the third array, and multiple
  • the transmission channel is branched by a second splitter, and the second transmission channel is connected to the second splitter to cascade the first array and the third array.
  • the offset correction value includes a phase correction value
  • the device further includes: a phase offset unit, configured to set the first transmission channel and the second transmission channel before detecting the signal power
  • the phase is offset such that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the phase offset between the first transmission channel and the second transmission channel is set in the first array such that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the value can reduce the measurement error of the deviation correction value, and further improve the accuracy of the transmission channel correction between the arrays.
  • the phase offset includes a plurality of different preset phase offset values
  • the detected signal power includes a plurality of the signal power sets, wherein each preset phase The offset value corresponds to a set of signal powers. That is, the phase offset unit is configured to separately set the phase offset between the first transmission channel and the second transmission channel to a plurality of different preset phase offset values, so that the first cascade transmission channel and the second The phase deviation between the cascade transmission channels deviates from the zero value; the power detecting unit is configured to detect the first cascade transmission channel and the second cascade transmission channel each time the phase offset unit sets a preset phase offset value Signal power.
  • the method further may further Reduce the measurement error of the deviation correction value.
  • the phase offset unit and the correction unit multiplex the at least one phase shifter.
  • at least one multiplexed phase shifter is disposed in each of the first transmission channel and the second transmission channel; or, the multiplexed phase shifter is not disposed in the first transmission channel, and at least the second transmission channel is set in the second transmission channel.
  • a multiplexed phase shifter can improve the utilization of the phase shifter by multiplexing at least one phase shifter, save cost, and improve design flexibility of the device.
  • a phase offset unit and a correction unit are not disposed in the first transmission channel, and a phase offset unit and a correction unit are disposed in the second transmission channel; or, in the first transmission channel A phase offset unit is provided, and a correction unit is disposed in the second transmission channel; or, a correction unit is disposed in the first transmission channel, and a phase offset unit is disposed in the second transmission channel.
  • the phase offset unit and the correction unit can be separately set, the multiplexed phase shifter is not performed, and the phase offset unit and the correction unit are each independent at least one phase shifter.
  • the design flexibility of the device can be improved by separately setting the phase offset unit and the correction unit, and can be disposed in the same transmission channel or different transmission channels.
  • the multiple arrays further include a sixth array, the first array is cascaded with the sixth array, the first array is the upper array of the sixth array, and the plurality of transmission channels are cascaded.
  • a third cascade transmission channel is further included, the third cascade transmission channel includes a fifth transmission channel in the first array and a reference transmission channel in the sixth array, and the device is further configured to: correct the first cascade transmission channel and the first The deviation between the three cascade transmission channels, and/or the deviation between the second cascade transmission channel and the third cascade transmission channel.
  • the correction of the deviation between any two cascade transmission channels in the multiple cascade transmission channels can be implemented, and the accuracy of the transmission channel offset correction between the multiple arrays is improved.
  • the device can be integrated in a semiconductor chip, and the plurality of arrays can also be integrated in a semiconductor chip.
  • the plurality of arrays and the device may be integrated into one semiconductor chip, or the device and the first array are integrated in the same semiconductor chip, and each of the plurality of arrays except the first array is integrated in each In different semiconductor chips.
  • a wireless communication device comprising the apparatus of the first aspect described above, or any one of the possible implementations of the first aspect described above.
  • the device may be a base station, a terminal, or a semiconductor chip.
  • a method for correcting deviations of transmission channels between a plurality of arrays including a first array, a second array, and a third array, the first array being cascaded with the second array and the third array, respectively And the first array is a second array and a third array of upper arrays, the cascaded plurality of arrays comprising a first cascade transmission channel and a second cascade transmission channel, the first cascade transmission channel comprising the first array a first transmission channel and a reference transmission channel in the second array, the second cascade transmission channel includes a second transmission channel of the first array and a reference transmission channel in the third array, the method comprising: detecting the first cascade transmission channel And the signal power of the second cascade transmission channel, the detected signal power includes one or more signal power sets, each signal power set includes a first signal power detected by the first cascade transmission channel, and a second level a second signal power detected by the joint transmission channel, and a third signal power detected by the first cascade transmission channel
  • the first cascading transmission channel and the second cascading transmission channel are both receiving channels
  • the plurality of arrays further includes a fourth array cascading with the first array
  • the first The array is a fourth array of upper arrays
  • the cascaded plurality of arrays further comprising a cascaded transmit channel
  • the cascaded transmit channels comprising a third transmit channel in the first array and a reference transmission channel in the fourth array
  • the first cascade The transmission channel and the second cascade transmission channel receive the signal transmitted by the cascade transmission channel through the air interface loopback.
  • the first cascading transmission channel and the second cascading transmission channel are both transmitting channels
  • the plurality of arrays further includes a fifth array cascading with the first array, and the first The array is a fifth array of upper arrays
  • the cascaded plurality of arrays further includes a cascade receiving channel, the cascade receiving channels including a fourth transmission channel in the first array and a reference transmission channel in the fifth array, the cascade receiving channel The signal for receiving the first cascade transmission channel and the second cascade transmission channel is received through the air interface loopback.
  • the offset correction value includes a phase correction value
  • the method further includes: setting the first The phase offset between the transmission channel and the second transmission channel is such that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the phase offset includes a plurality of different preset phase offset values
  • the detected signal power includes a plurality of signal power sets, wherein each preset phase offset The value corresponds to a set of signal powers. That is, the phase offset between the first transmission channel and the second transmission channel is respectively set to a plurality of different preset phase offset values; each time a preset phase offset value is set, the first cascade is detected. Signal power of the transmission channel and the second cascade transmission channel.
  • the multiple arrays further include a sixth array, the first array is cascaded with the sixth array, the first array is the upper array of the sixth array, and the plurality of transmission channels are cascaded.
  • a third cascade transmission channel is further included, the third cascade transmission channel includes a fifth transmission channel in the first array and a reference transmission channel of the sixth array, the method further comprising: correcting the first cascade transmission channel and the third level Deviation between the transmission channels, and/or correction of the deviation between the second cascade transmission channel and the third cascade transmission channel.
  • the execution body of the method provided by any one of the foregoing second aspect or the second aspect may be the device provided by the foregoing first aspect, the first aspect, or the integrated device.
  • the chip of the device, or the execution body may be the wireless channel device provided by the second aspect above.
  • any of the above provided means for correcting the deviation of the transmission channels between the plurality of arrays is used for performing the above-mentioned method for correcting the deviation of the transmission channels between the plurality of arrays, so that it can be achieved
  • FIG. 1 is a schematic structural diagram of a combination form of an antenna unit and a chip according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a first device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an array cascade according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a second device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a third device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a fourth device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a fifth device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a first multiple array cascade according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a second device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a semiconductor chip according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a second multiple array cascade according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic flowchart diagram of a method for correcting a deviation of a transmission channel between multiple arrays according to an embodiment of the present application.
  • Phased array is a phase-controlled electronic scanning array. It uses a large number of antenna elements arranged in an array. Each antenna unit can have independent switch control. By controlling the amplitude and phase of each antenna unit in the array, the electromagnetic wave radiation is modulated. Direction to synthesize a beam with a focused focus scan.
  • a device eg, a base station or a terminal, etc.
  • a device in a communication system using phased array technology may generally include an antenna unit and a chip, and a chip may include a plurality of RF channels, and one RF channel and one antenna unit may constitute a device.
  • the radio frequency channel, and the channel formed by the radio frequency channel and the antenna unit may be referred to as a transmission channel.
  • a plurality of chips can be used in one device, and each chip can include multiple transmission channels, and multiple chips can be connected in a cascade manner, thereby expanding the number of transmission channels in the phased array.
  • Multiple transmission channels in a chip may be referred to as an array, and cascading of multiple chips may also be referred to as a cascade of multiple arrays.
  • the device in FIG. 1 includes five chips (chip 1 to chip 5), and the chip 1 is simultaneously connected to the chip 2 to the chip 5, that is, the chip 1 is cascaded with four chips, and each of the four chips of the cascade includes A 4 ⁇ 4 antenna array is used, and the antenna unit is a patch antenna as an example.
  • the antenna elements and chips in the phased array can be printed in two combinations, namely AOB (antenna on PCB) and AIP (antenna in package). As shown in (a) of FIG.
  • AOB means that the antenna unit is in a printed circuit board (PCB), and the antenna unit and the chip can be respectively located on both sides of the PCB (ie, the antenna unit is printed on one side of the PCB, the chip Attached to the other side of the PCB, it can also be located on the same side of the PCB (ie, the antenna unit is printed on one side of the PCB, and the chip is also attached to the surface), and the different faces are illustrated in FIG. 1 as an example.
  • AIP means that the antenna unit is located in a package of the chip, the antenna unit is packaged with the chip, the antenna unit can be located on the top of the package of the chip, and the chip is attached to the PCB.
  • the apparatus 200 comprising: power detection Unit 201, processing unit 202, and correction unit 203.
  • the power detecting unit 201 is configured to detect signal powers of the first cascade transmission channel and the second cascade transmission channel, where the detected signal power includes one or more signal power sets, and each signal power set includes a first cascade a first signal power detected by the transmission channel, a second signal power detected for the second cascade transmission channel, and a third signal power detected for the first cascade transmission channel and the second cascade transmission channel.
  • the first cascade transmission channel includes a first transmission channel in the first array and a reference transmission channel in the second array
  • the second cascade transmission channel includes a second transmission channel of the first array and a reference in the third array.
  • Each of the first array, the second array, and the third array may include a plurality of transmission channels, and the plurality of transmission channels of each of the plurality of arrays may be a corrected transmission channel or an uncorrected transmission channel.
  • the plurality of transmission channels in the first array are uncorrected transmission channels
  • the transmission channels in the second array and the third array may be corrected transmission channels.
  • the first transmission channel is a transmission channel that is cascaded with the second array among the plurality of transmission channels of the first array
  • the second transmission channel is a transmission channel that is cascaded with the third array among the plurality of transmission channels of the first array.
  • the reference transmission channel in the second array may be any one of a plurality of transmission channels of the second array
  • the reference transmission channel in the third array may be any one of a plurality of transmission channels of the third array.
  • the first transmission channel and the second transmission channel may be two transmission channels adjacent to each other in physical position, or may be two transmission channels that are far apart in physical position.
  • each of the plurality of arrays includes N transmission channels, each of which includes a phase shifter (PS), and N transmission channels of the first array.
  • the N transmission channels of the second array are CH_211 to CH_21N
  • the N transmission channels of the third array are CH_221 to CH_22N.
  • the first array is cascaded with the second array by CH_111, and is cascaded with the third array by CH_11N.
  • the first cascade transmission channel includes CH_111 and CH_211
  • CH_221 is the first
  • the second cascade transmission channels include CH_11N and CH_221.
  • each transmission channel shown in FIG. 3 is merely exemplary. In practical applications, the PS may be set in each transmission channel, or the PS may not be set in some transmission channels. FIG. 3 does not.
  • the embodiments of the present application constitute a limitation.
  • the power detecting unit 201 may perform signal power detection on the first cascade transmission channel, the second cascade transmission channel, and the first cascade transmission channel and the second cascade transmission channel, respectively, to obtain a signal power set; Alternatively, the power detecting unit 201 performs multiple signal power detections on the first cascade transmission channel, the second cascade transmission channel, and the first cascade transmission channel and the second cascade transmission channel, respectively, to obtain multiple signal power sets. .
  • the power detecting unit 201 detects the first signal power for the first cascading transmission channel; when the first cascading transmission channel is closed, the second When the cascading transmission channel is turned on, the power detecting unit 201 detects the second signal power for the second cascading transmission channel; when both the first cascading transmission channel and the second cascading transmission channel are open, the power detecting unit 201 is the first The cascading transmission channel and the second cascading transmission channel detect a third signal power.
  • the power detecting unit 201 can be a power detector (PD).
  • the processing unit 202 is configured to determine, according to the detected signal power, a deviation correction value between the first cascade transmission channel and the second cascade transmission channel.
  • the processing unit 202 may be configured to determine a deviation correction value between the first cascade transmission channel and the second cascade transmission channel according to a signal power set;
  • the processing unit 202 may be configured to determine a deviation correction value between the first cascade transmission channel and the second cascade transmission channel according to the plurality of signal power sets.
  • the deviation correction value may include at least one of a phase correction value and an amplitude correction value.
  • Each signal power set includes a first signal power, a second signal power, and a third signal power.
  • a signal power set is taken as an example for illustration.
  • the first signal power is V 1 2
  • the second signal power is V 2 2
  • the third signal power is V 3 2 , if between the first cascade transmission channel and the second cascade transmission channel.
  • the phase correction value is ⁇ , that is, the angle between the signal of the first cascade transmission channel and the second cascade transmission channel is ⁇
  • the processing unit 202 can determine the phase correction value ⁇ according to the following formula (1).
  • processing The unit 202 can determine the amplitude correction value P according to the following formula (2).
  • the processing unit 202 may be configured to determine a phase correction value/amplitude correction value according to each signal power set, and then obtain the obtained plurality of phase correction values/amplitude correction values.
  • the average value is determined as a phase correction value/amplitude correction value between the first cascade transmission channel and the second cascade transmission channel, or the final phase correction value/amplitude correction value is determined according to other statistical methods. This is not specifically limited.
  • the correcting unit 203 is configured to set the offset correction value in the first transmission channel or the second transmission channel to correct the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • the correcting unit 203 may set the offset correction value in the first transmission channel, that is, compensate the offset correction value in the first transmission channel, to correct the deviation between the first cascade transmission channel and the second cascade transmission channel; Alternatively, the correcting unit 203 may set the offset correction value in the second transmission channel, that is, compensate the offset correction value in the second transmission channel to correct the deviation between the first cascade transmission channel and the second cascade transmission channel. That is, when correcting the deviation between the first cascade transmission channel and the second cascade transmission channel, the offset correction value may be set in the first transmission channel or the second transmission channel included in the first array to correct the second The deviation of the transmission channel between the array and the third array.
  • the correcting unit 203 may be one or more phase shifters PS, and may be provided with a phase shifter in the first transmission channel, or may be provided with a phase shifter in the second transmission channel, or at the same time in the first transmission channel and the first A phase shifter is provided in the second transmission channel.
  • the first transmission channel and the second transmission channel are merged by the first combiner 204.
  • the power detection unit 201 is coupled to the first combiner 204 via a first coupler 205 to receive signals coupled from the first combiner 204.
  • the signals received by the first cascade transmission channel and the second cascade transmission channel may come from a far field, such as a signal transmitted from an external device or instrument.
  • CH_111 in FIG. 4 represents the first transmission channel
  • CH_11N represents the second transmission channel
  • CH_211 represents the reference transmission channel of the second array
  • CH_22N represents the reference transmission channel of the third array
  • RX represents the reception state.
  • the plurality of arrays further includes a fourth array cascaded with the first array, and the first array is a superior array of the fourth array, and the cascaded plurality of arrays further includes a cascaded transmit channel, the level
  • the joint transmission channel includes a third transmission channel in the first array and a reference transmission channel in the fourth array, and the first cascade transmission channel and the second cascade transmission channel receive signals transmitted by the cascade transmission channel through the air interface loopback.
  • the third transmission channel is a transmission channel cascaded with the fourth array among the plurality of transmission channels of the first array, and the reference transmission channel in the fourth array is any one of the plurality of transmission channels of the fourth array.
  • CH_11N represents the second transmission channel
  • CH_112 represents the third transmission channel
  • CH_211 represents the reference transmission channel of the second array
  • CH_22N represents the reference transmission channel of the third array
  • CH_231 represents the first transmission channel.
  • the reference transmission channel in the four arrays RX indicates the reception state
  • TX indicates the transmission state.
  • the signal received by the first cascading transmission channel is transmitted to the first multiplexer 204, and the power detecting unit 201 detects the multiplexer from the first multiplexer.
  • the signal coupled by the 204 obtains the first signal power; when the first cascade transmission channel is closed and the second cascade transmission channel is opened, the signal received by the second cascade transmission channel is transmitted to the first combiner 204, and the power detection is performed.
  • the unit 201 detects a signal coupled from the first combiner 204 to obtain a second signal power; when both the first cascade transmission channel and the second cascade transmission channel are open, the first cascade transmission channel and the second cascade The signal received by the transmission channel is transmitted to the first combiner 204, and the power detecting unit 201 detects the signal coupled by the first coupler 205 from the first combiner 204 to obtain a third signal power.
  • the plurality of transmission channels of the second array are merged by the second multiplexer 206, and the first transmission is performed.
  • the channel is coupled to the second combiner 206 to cascade the first array and the second array; the plurality of transmission channels of the third array are merged by the third combiner 207, the second transfer channel and the third combiner 207 Connected to cascade the first array and the third array.
  • CH_111 and CH_11N respectively denote a first transmission channel and a second transmission channel
  • CH_211 to CH21N represent a plurality of transmission channels of the second array
  • CH_221 to CH_22N represent a plurality of transmission channels of the third array
  • RX Indicates the receiving status.
  • the plurality of arrays further includes a fifth array cascading with the first array, and the first array is a superordinate array of the fifth array, the cascaded plurality of arrays further comprising a cascade receiving channel, the cascade receiving channel comprising a fourth transmission channel in the first array and a reference transmission channel in the fifth array, the cascade receiving channel being used for Receiving signals transmitted by the first cascade transmission channel and the second cascade transmission channel through the air interface loop, the power detecting unit 201 is connected to the fourth transmission channel in the first array through the second coupler 208 to receive the fourth transmission The signal that the channel is coupled to.
  • the fourth transmission channel is a transmission channel that is cascaded with the fifth array among the plurality of transmission channels of the first array, the fifth array may include multiple transmission channels, and the reference transmission channel of the fifth array may be in multiple transmission channels thereof. Any of the transmission channels.
  • CH_111 and CH_11N respectively denote a first transmission channel and a second transmission channel
  • CH_112 denotes a fourth transmission channel
  • CH_211 denotes a reference transmission channel of the second array
  • CH_22N denotes a reference transmission channel of the third array.
  • the reference transmission channel of the fifth array is represented by CH_241, and the cascaded reception channels include CH_112 and CH_241.
  • TX indicates the transmission state and RX indicates the reception state.
  • the signal transmitted by the first cascading transmission channel is returned to the cascading receiving channel through the air interface ring, and the power detecting unit 201 detects the second coupler 208.
  • the first signal power is obtained from the signal coupled by the cascading receiving channel; when the first cascading transmission channel is closed and the second cascading transmission channel is opened, the signal transmitted by the second cascading transmission channel is returned to the cascading through the air interface ring Receiving the channel, the power detecting unit 201 detects the signal coupled by the second coupler 208 from the cascade receiving channel to obtain the second signal power; when the first cascade transmission channel and the second cascade transmission channel are both open, the first stage The signals transmitted by the joint transmission channel and the second cascade transmission channel are all returned to the cascade receiving channel through the air interface loop, and the power detecting unit 201 detects the signal coupled by the second coupler 208 from the cascade receiving channel to obtain the third signal power.
  • the plurality of transmission channels of the second array are split by the first splitter 209, first The transmission channel is connected to the first splitter 209 to cascade the first array and the second array; the plurality of transmission channels of the third array are branched by the second splitter 210, the first transmission channel and the second branch The switches 210 are connected to cascade the first array and the third array.
  • the apparatus further includes: a phase offset unit 211a.
  • the phase offset unit 211a is configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from a zero value.
  • the phase offset unit 211a may be configured to set a phase offset value of the first transmission channel or set a phase offset of the second transmission channel when setting a phase offset between the first transmission channel and the second transmission channel. Setting, or simultaneously setting phase offset values of the first transmission channel and the second transmission channel to implement a function of setting a phase offset between the first transmission channel and the second transmission channel, thereby enabling the first cascade transmission The phase deviation between the channel and the second cascade transmission channel deviates from zero.
  • phase deviation between the first cascade transmission channel and the second cascade transmission channel which is the deviation that needs to be measured and corrected.
  • the initial phase deviation between the first cascade transmission channel and the second cascade transmission channel is close to zero degree, the error of measuring the initial phase difference by the method of detecting the signal power is relatively large, and the first transmission is set by the phase offset unit 211a.
  • a phase offset between the channel and the second transmission channel After the phase offset is superimposed on the initial phase deviation, the phase deviation between the first cascade transmission channel and the second cascade transmission channel may be offset from zero, thereby improving the initial The measurement accuracy of the phase difference.
  • the phase offset includes a plurality of different preset phase offset values, the detected signal power comprising a plurality of signal power sets, wherein each preset phase offset value corresponds to a set of signal powers.
  • the phase offset may be set such that the phase deviation between the two cascaded transmission channels to be corrected deviates from the zero value, but the randomness of the initial phase deviation may not be excluded, and in some cases may be The phase deviation between the two cascaded transmission channels on which the phase offset is superimposed is still close to zero.
  • the accuracy and reliability of correcting the initial phase deviation is further improved by employing a plurality of different preset phase offset values.
  • the phase offset unit 211a may be configured to set the phase offset between the first transmission channel and the second transmission channel multiple times, and the phase offset set each time may be a plurality of different preset phase offset values.
  • the power detecting unit 201 can detect the first cascade transmission channel and the second cascade transmission.
  • the signal power of the channel is obtained as a set of signal powers, so that when the phase offset unit 211a is respectively set with a plurality of different preset phase offset values, the power detecting unit 201 can detect a plurality of signal power sets and a preset phase.
  • the value corresponds to a set of signal powers.
  • phase deviation between the first cascade transmission channel and the second cascade transmission is close to zero
  • the deviation between the first cascade transmission channel and the second cascade transmission channel is corrected by detecting the signal power, according to the detection
  • the error of the deviation correction value determined by the signal power is large, so that the accuracy of the deviation correction between the cascade transmission channels is low, and the phase offset between the first transmission channel and the second transmission channel is set before the signal power is detected. , can further improve the accuracy of the correction.
  • ⁇ determined by the processing unit 202 according to the above formula (1) is a phase correction value (expressed as ⁇ 0 ) and the phase offset (in ⁇ represents the superposition of () Then, the processing unit 202 can determine the phase correction value ⁇ 0 based on the difference between ⁇ and ⁇ .
  • the correcting unit 203 may determine the phase correction value and the phase offset according to the phase The superposition ⁇ corrects the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • the correcting unit 203 may correct the first stage according to the phase correction value ⁇ 0 directly The deviation between the joint transmission channel and the second cascade transmission channel.
  • the phase correction value ⁇ 0 is 6°
  • the phase offset ⁇ is 40°
  • the phase correction unit 211a can set 46° ( ⁇ The sum of 0 and ⁇ is compensated in the first transmission channel, or the phase correcting unit 211a can compensate -46° in the second transmission channel, and if the phase offset 40° set at the time of correction has been restored to zero, then
  • the phase correcting unit 211a may compensate 6° in the first transmission channel or -6° in the second transmission channel to correct the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • phase offset unit 211a and the correction unit 203 may multiplex at least one phase shifter, that is, the functions of the phase offset unit 211a and the correction unit 203 may be implemented by at least one phase shifter.
  • At least one phase shifter can be used not only to set a phase offset between the first transmission channel and the second transmission channel, but also to set a deviation correction value between the first cascade transmission channel and the second cascade transmission channel.
  • the first transmission channel is either disposed in the second transmission channel.
  • the setting of the phase shifters in the first transmission channel and the second transmission channel may include the following, as described below.
  • At least one multiplexed phase shifter is disposed in each of the first type, the first transmission channel, and the second transmission channel, that is, one or more phase shifters are disposed in the first transmission channel and the second transmission channel.
  • one or more phase shifters may be disposed in the first transmission channel, and when a phase shifter is disposed in the first transmission channel, the phase shifter may be used to set a phase offset value of the first transmission channel. So that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero, and can also be used to set the offset correction value between the first cascade transmission channel and the second cascade transmission channel.
  • the plurality of phase shifters may cooperate to set a phase offset value of the first transmission channel, so that the first cascade transmission channel and The phase deviation between the second cascade transmission channels deviates from zero, and may also be used to set the offset correction value between the first cascade transmission channel and the second cascade transmission channel in the first transmission channel.
  • one or more phase shifters may be disposed in the second transmission channel, and the description of one or more phase shifters in the second transmission channel is consistent with the description of the first transmission channel, and the embodiment of the present application is This will not be repeated here.
  • the phase shifter multiplexed in the first transmission channel can be used to set the phase offset of the first transmission channel.
  • the value-shifted phase shifter in the second transmission channel can also be used to set the phase offset value of the second transmission channel to deviate the phase deviation between the first cascade transmission channel and the second cascade transmission channel. Zero value. Therefore, when the phase offset between the first transmission channel and the second transmission channel is set, the difference between the phase offset values of the two transmission channels that are set is the phase offset.
  • the phase shift value of the first transmission channel is set to 20° by the phase shifter multiplexed in the first transmission channel
  • the phase shift of the second transmission channel is set by the multiplexed phase shifter in the second transmission channel.
  • the value is set to 110° such that the phase offset between the first transmission channel and the second transmission channel is 90°, so that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the first transmission channel may be set by the phase shifter multiplexed in the first transmission channel each time.
  • a phase offset value wherein another phase offset value is set for the second transmission channel by the multiplexed phase shifter in the second transmission channel, and after each setting, the first transmission channel and the second transmission channel are made.
  • the phase offset is a different preset phase offset value.
  • the phase offset value of the first transmission channel is set to 120°
  • the phase offset value of the second transmission channel is set to 60°, so that the phase offset between the first transmission channel and the second transmission channel is It is -60° so that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the phase offset value of the first transmission channel is set to 45°
  • the phase offset value of the second transmission channel is set to -40°, so that the phase offset between the first transmission channel and the second transmission channel is It is 5° so that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • phase deviation is 3°, but instead it is close to zero.
  • the phase deviation between the first cascade transmission channel and the second cascade transmission channel is 62°, and then different presets are set by multiple times.
  • the phase offset value is set such that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the phase offset between the first transmission channel and the second transmission channel may also be a specified offset value, and multiple times through the first transmission channel are respectively multiplexed if the specified offset value is unchanged.
  • the phase shifter sets an angular offset value of the first transmission channel, and sets an angular offset value of the second transmission channel through the multiplexed phase shifter in the second transmission channel, respectively.
  • the specified offset value is 90°.
  • the phase offset value of the first transmission channel is set to 60°
  • the phase offset value of the second transmission channel is set to 150°, so that the phase offset between the first transmission channel and the second transmission channel is 90°. ° such that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the phase shift value of the first transmission channel is set to -45°
  • the phase offset value of the second transmission channel is set to 45°, so that the phase offset between the first transmission channel and the second transmission channel is It is 90° so that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • no phase shifter is disposed in the first transmission channel, and at least one phase shifter that is multiplexed is disposed in the second transmission channel.
  • the first transmission channel can be used as a reference transmission channel without using a phase shifter, and at least one or more phase shifters are disposed in the second transmission channel.
  • the one or more phase shifters may be configured to set a phase offset value of the second transmission channel to implement a function of setting a phase offset between the first transmission channel and the second transmission channel, thereby enabling the first cascade transmission channel
  • the phase deviation from the second cascade transmission channel deviates from zero.
  • the one or more phase shifters may also be configured to set a deviation correction value between the first cascade transmission channel and the second cascade transmission channel in the second transmission channel, thereby implementing correction of the first cascade transmission channel and the first The function of the deviation between the secondary transmission channels.
  • phase offset unit 211a and the correction unit 203 may also be separately provided, and at least include two phase shifters.
  • the phase offset unit 211a is the first phase shifter
  • the correcting unit 203 is the second phase shifter.
  • the first phase shifter is used to implement the function of the phase offset unit 211a
  • the second phase shifter is used to implement The function of the correction unit 203.
  • the setting of the two phase shifters in the first transmission channel and the second transmission channel may include the following situations: two phase shifters may be disposed in each of the first transmission channel and the second transmission channel; or a first phase shifter is disposed in the first transmission channel, and a second phase shifter is disposed in the second transmission channel; or a second phase shifter is disposed in the first transmission channel, and the second transmission channel is set in the second transmission channel There is a first phase shifter; or, no phase shifter is provided in the first transmission channel, and two phase shifters are arranged in the second transmission channel.
  • the plurality of arrays further includes a sixth array
  • the first array is cascaded with the sixth array
  • the first array is the upper array of the sixth array
  • the plurality of cascaded transmission channels further includes a third cascade transmission channel
  • the triple cascade transmission channel includes a fifth transmission channel in the first array and a reference transmission channel of the sixth array
  • the device is further configured to: correct a deviation between the first cascade transmission channel and the third cascade transmission channel, and/ Or, correcting the deviation between the second cascade transmission channel and the third cascade transmission channel.
  • the power detecting unit 201 is further configured to detect signal powers of the first cascade transmission channel and the third cascade transmission channel, where the detected signal power includes one or more signal power sets, and each signal power set includes a first a fourth signal power detected by the cascade transmission channel, a fifth signal power detected by the third cascade transmission channel, and a sixth signal power detected by the first cascade transmission channel and the third cascade transmission channel;
  • the processing unit 202 is further configured to determine, according to the detected signal power, a deviation correction value between the first cascade transmission channel and the third cascade transmission channel;
  • the correction unit 204 is further configured to use the first cascade transmission channel and the first
  • the deviation correction value deviation correction value between the three cascade transmission channels is set in the first transmission channel or the third transmission channel to correct the deviation between the first cascade transmission channel and the third cascade transmission channel.
  • the phase offset unit 211a is further configured to set a phase offset between the first transmission channel and the third
  • the apparatus 200 is further configured to correct a deviation between the first cascade transmission channel and the third cascade transmission channel, and/or to correct a deviation between the second cascade transmission channel and the third cascade transmission channel.
  • the specific implementation manner is similar to the foregoing implementation of correcting the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • the embodiments of the present application are not described herein again.
  • the apparatus 200 when the apparatus 200 is further configured to correct a deviation between the first cascade transmission channel and the third cascade transmission channel, a deviation correction value between the first cascade transmission channel and the third cascade transmission channel may be obtained.
  • the processing unit 202 in the apparatus 200 may further perform a deviation correction value between the first cascade transmission channel and the second cascade transmission channel, and a deviation correction value between the second cascade transmission channel and the third cascade transmission channel.
  • the absolute deviation correction value may include an absolute phase correction value and an absolute amplitude correction value Further, the correcting unit 203 can perform correction based on the absolute deviation correction value of each cascaded transmission channel to ensure the consistency of the plurality of cascaded transmission channels.
  • the plurality of cascaded transmission channels may be divided into multiple groups, and each group includes two cascaded transmission channels.
  • connection relationship of the two cascade transmissions may be any one of the above FIG. 4 to FIG. 7.
  • the two cascaded transmission channels in the same group can determine the offset correction values between the two cascaded transmission channels in the same group by similarly correcting the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • processing unit 202 may further determine an absolute deviation correction value of each cascade transmission channel based on a corresponding offset correction value between the plurality of sets of cascade transmission channels; the correction unit 203 may further determine an absolute deviation correction value based on each cascade transmission channel. Correction is performed to ensure consistency of multiple cascaded transmission channels.
  • four cascaded transmission channels included in a plurality of cascaded arrays are respectively CH1 to CH4, and the four cascaded transmission channels can be divided into four groups, namely CH1 and CH2, CH2, and CH3. , CH3 and CH4, and CH4 and CH1.
  • phase deviation correction values determined by the processing unit 202 are sequentially determined as ⁇ 1 , ⁇ 2 , ⁇ 3 , and ⁇ 4 , if the absolute phase correction values of the four cascade transmission channels are sequentially ⁇ 1 , ⁇ 2 , ⁇ 3 And ⁇ 4 , then the following equations are satisfied between the four phase deviation correction values (ie, ⁇ 1 , ⁇ 2 , ⁇ 3 , and ⁇ 4 ) and the absolute phase correction values (ie, ⁇ 1 , ⁇ 2 , ⁇ 3 , and ⁇ 4 ) ( 3).
  • ⁇ i>1 and C -1 are as follows.
  • processing unit 202 is further configured to determine an absolute amplitude correction value of each of the plurality of cascaded transmission channels, and the specific determination manner is determined by determining the absolute phase correction value of each of the cascade transmission channels.
  • the manners are similar. For details, refer to the description above, which is not described in this embodiment of the present application.
  • the device 200 may be integrated in a semiconductor chip, the plurality of arrays may also be integrated in a semiconductor chip, and the device 200 and the plurality of arrays may each be integrated in different semiconductor chips.
  • the device 200 and the first array are integrated in the same semiconductor chip, and the other of the plurality of arrays are each integrated in a different semiconductor chip.
  • FIG. 10 is a schematic diagram in which the apparatus 200 and the plurality of arrays are each integrated in different semiconductor chips, wherein the apparatus 200 is integrated in the chip 01, and the first array to the third array are respectively integrated in In the chip 02 to the chip 04;
  • the device 200 and the first array are integrated in the same semiconductor chip (ie, the chip 05), and the second array and the third array are respectively integrated in different semiconductor chips. (ie, chip 06 to chip 07).
  • the device 200 can also be integrated in a wireless channel device.
  • the wireless channel device can be a base station or a terminal.
  • the plurality of arrays can each be integrated into different semiconductor chips, and the integrated semiconductor chip can be external to the wireless communication device.
  • the wireless channel device is a terminal, the plurality of arrays may also be integrated in the terminal, and the first array and the device 200 may be integrated in the same semiconductor chip.
  • the apparatus can also be used to correct deviations between the plurality of cascaded transmission channels included in the array of any of the upper and lower stages.
  • the first array is directly cascaded with the second array and the third array, and the device is configured to correct a deviation between the first array and the cascade transmission channels composed of the second array and the third array; or, the first array and the first array
  • the two arrays and the third array are indirectly cascaded, that is, at least one array is respectively connected between the first array and the second array and the third array, and the apparatus may be used for correcting the first array to the second array, and the first array A deviation between a plurality of cascaded transmission channels composed of the third array.
  • the deviation between the plurality of cascade transmission channels included in any of the upper and lower arrays is consistent with the manner of correcting the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • the embodiments are not described herein again.
  • a cascade structure of a plurality of arrays is as shown in FIG. 11, the cascade of the plurality of arrays includes three stages, each of the plurality of arrays may include N transmission channels, and TRX indicates that the transmission channels in one array may be Set to receive status (RX) or set to transmit status (TX).
  • the apparatus shown in FIG. 2 or FIG. 9 may be integrated in a chip in which each array in the second stage is located for correcting between the cascaded transmission channels included in the second-level array and the third-level array. deviation. Integrating the device shown in FIG. 2 or FIG.
  • each transmission channel shown in FIG. 11 is only exemplary. In practical applications, the PS may be set in each transmission channel, or the PS may be set in a partial transmission channel. FIG. 11 is not applicable to the embodiment of the present application. The composition is limited.
  • FIG. 12 is a schematic flowchart of a method for correcting a deviation of a transmission channel between multiple arrays according to an embodiment of the present disclosure, where multiple arrays include a first array, a second array, and a third array, and the first array and the second array respectively
  • the array and the third array are cascaded, and the first array is a second array and a third array of upper arrays, and the cascaded plurality of arrays includes a first cascade transmission channel and a second cascade transmission channel, the first cascade transmission The channel includes a first transmission channel in the first array and a reference transmission channel in the second array, the second cascade transmission channel including a second transmission channel of the first array and a reference transmission channel in the third array.
  • the execution body of the method may be the device provided by the above embodiment, or a chip integrated with the device, or a wireless communication device including the device. Referring to Figure 12, the method includes the following steps.
  • Step 1201 Detect signal power of the first cascade transmission channel and the second cascade transmission channel.
  • the detected signal power includes one or more signal power sets, and each of the signal power sets includes a first signal power detected by the first cascade transmission channel and a second signal detected by the second cascade transmission channel. Power, and third signal power detected for the first cascade transmission channel and the second cascade transmission channel.
  • Step 1202 Determine, according to the detected signal power, a deviation correction value between the first cascade transmission channel and the second cascade transmission channel.
  • Step 1203 The offset correction value is set in the first transmission channel or the second transmission channel to correct the deviation between the first cascade transmission channel and the second cascade transmission channel.
  • the first cascading transmission channel and the second cascading transmission channel are both receiving channels
  • the plurality of arrays further include a fourth array cascading with the first array
  • the first array is an upper array of the fourth array
  • the cascaded plurality of arrays further includes a cascaded transmit channel, the cascaded transmit channel including a third transmit channel in the first array and a reference transmit channel in the fourth array, a first cascaded transmit channel and a second cascaded transmit channel
  • the signal transmitted by the cascade transmission channel is received through the air interface loopback.
  • the plurality of arrays further comprise a fifth array cascading with the first array, and the first array is a higher array of the fifth array, cascading
  • the plurality of arrays further includes a cascade receiving channel, the cascade receiving channel includes a fourth transmission channel in the first array and a reference transmission channel in the fifth array, and the cascade receiving channel is configured to receive the first cascade through the air interface loopback The signal transmitted by the transmission channel and the second cascade transmission channel.
  • step 1201 the method may further include: step 1200.
  • Step 1200 Set a phase offset between the first transmission channel and the second transmission channel, so that the phase deviation between the first cascade transmission channel and the second cascade transmission channel deviates from zero.
  • the plurality of arrays further includes a sixth array
  • the first array is cascaded with the sixth array
  • the first array is an upper array of the sixth array
  • the plurality of cascaded transmission channels further includes a third cascading transmission channel
  • the third cascading transmission channel includes a fifth transmission channel in the first array and a reference transmission channel of the sixth array
  • the method further comprising: correcting the first cascading transmission channel and the third cascading transmission channel The deviation between, and/or, corrects the deviation between the second cascade transmission channel and the third cascade transmission channel.
  • steps 1200-1203 may refer to the correlation in the power detecting unit 201, the processing unit 202, the correcting unit 203, and the phase offset unit 211a in the device embodiment described in FIG. 2 to FIG.
  • the description of the embodiments of the present application is not described herein again.
  • the plurality of arrays when the plurality of arrays includes the first array, the second array, and the third array, the second array and the third array are cascaded by the first array, and the first array is used as the second array and the first array a three-array upper array, the cascaded plurality of arrays including a first cascade transmission channel and a second cascade transmission channel, by detecting signal power of the first cascade transmission channel and the second cascade transmission channel, according to the detected The signal power determines a deviation correction value between the first cascade transmission channel and the second cascade transmission channel, and sets the offset correction value in the first array to implement setting the first cascade transmission channel and the second cascade transmission channel The deviation correction value between the two, thereby improving the accuracy of the correction, and realizing the online correction of the transmission channel between the arrays.
  • the phase deviation between the first cascade transmission channel and the second cascade transmission channel is deviated from zero value, which can be reduced.
  • the measurement error of the deviation correction value further improves the accuracy of the transmission channel correction between the arrays.

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  • Electromagnetism (AREA)
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Abstract

La présente invention se rapporte au domaine technique des communications. L'invention concerne un dispositif et un procédé permettant de corriger un écart entre de multiples réseaux de canaux de transmission capables d'améliorer la précision de correction et de réaliser une correction en ligne pour de multiples réseaux de canaux de transmission. Les multiples réseaux comprennent un premier réseau, un second réseau et un troisième réseau. Le premier réseau est respectivement connecté en cascade avec le second réseau et le troisième réseau. Le premier réseau est un réseau de niveau supérieur par rapport au second réseau et au troisième réseau. Les réseaux en cascade comprennent une première cascade de canaux de transmission et une seconde cascade de canaux de transmission. Le dispositif comprend : une unité de détection de puissance utilisée pour détecter des puissances de signal sur la première cascade de canaux de transmission et la seconde cascade de canaux de transmission; une unité de traitement utilisée pour déterminer, selon les puissances de signal détectées, une valeur de correction d'écart pour la première cascade de canaux de transmission et la seconde cascade de canaux de transmission; et une unité de correction utilisée pour régler la valeur de correction d'écart sur la première cascade de canaux de transmission ou la seconde cascade de canaux de transmission afin de corriger un écart entre la première cascade de canaux de transmission et la seconde cascade de canaux de transmission.
PCT/CN2017/119185 2017-12-28 2017-12-28 Dispositif et procédé permettant de corriger un écart entre de multiples réseaux de canaux de transmission WO2019127171A1 (fr)

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CN201780098048.2A CN111527713B (zh) 2017-12-28 2017-12-28 一种用于校正多个阵列间传输通道偏差的装置及方法

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